Add support for presence sensor

[zerzhang]

• Add presence sensor

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
switchbot/adv_parser.py	94.39% <100.00%> (+0.05%)	⬆️
switchbot/adv_parsers/presence_sensor.py	100.00% <100.00%> (ø)
switchbot/const/__init__.py	100.00% <100.00%> (ø)
switchbot/const/presence_sensor.py	100.00% <100.00%> (ø)
switchbot/devices/device.py	63.35% <ø> (ø)

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[bdraco]

@zerzhang Would you please resolve conflicts

[borgqueenx]

If this is complete, does it mean the presence sensor is supported by switchbot bluetooth integration in home assistant in the next release? @zerzhang

[zerzhang]

If this is complete, does it mean the presence sensor is supported by switchbot bluetooth integration in home assistant in the next release? @zerzhang

After this review is completed, I need to create a pull request for the precensor sensor on HA Core and wait for it to be merged.

[zerzhang]

@zerzhang Would you please resolve conflicts

fixed

[bdraco]

Thanks @zerzhang

[lukasmalkmus]

I did some attempt of creating a PR in HomeAssistant but I've never contributed to it, so far. So there might be developers more suited for that :)

But I wonder if in this PR the presence sensor exposes led_state when it should probably expose is_light?